The isotope 64Zn has a nuclear radius of 4.8 × 10−15 m.Approximately what is the nuclear radius of the isotope 125Te?

A) 2.0 × 10−15 m B) 3.6 × 10−15 m C) 2.7 × 10−15 m D) 6.0 × 10−15 m A) 2.0 × 10−15 m B) 3.6 × 10−15 m C) 2.7 × 10−15 m D) 6.0 × 10−15 m

A) 2.7 × 10-11 B) 3.7 C) 0.27 D) 3.7 × 1010 A) 2.7 × 10-11 B) 3.7 C) 0.27 D) 3.7 × 1010

If there are 146 neutrons in 238U,how many neutrons are found in the nucleus of 233U?

A) 147 B) 145 C) 143 D) 141 A) 147 B) 145 C) 143 D) 141

The half-life of 19N is 0.42 s.What is the decay constant for this isotope?

A) 1.7 × 10-11 Ci B) 1.7 s-1 C) 1.1 s-1 D) The decay constant is not defined for a half-life of less than one second. A) 1.7 × 10-11 Ci B) 1.7 s-1 C) 1.1 s-1 D) The decay constant is not defined for a half-life of less than one second.

Exam 30: Nuclear Energy and Elementary Particles: Part A

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A radioactive material initially is observed to have an activity of 1000 decays/sec.If nine hours later it is observed to have an activity of 125 decays/s,what is its half-life?

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Question 1

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What is the energy released for the reaction where the products are 0.0051 u less than the reactants? (1 u = 931.5 MeV/c²)

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Calculate the binding energy per nucleon of the Nucleus,given that the mass of this nucleus is 3.016029 u.(m_p = 1.007276 u,m_n = 1.008665,and 1 u = 931.5 MeV/c²)

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What energy must be added or given off in a reaction where a helium atom is separated into two hydrogen atoms and two neutrons? (Atomic masses for each: hydrogen,1.007825 u;neutron,1.008665 u;helium,4.002602 u;also,1 u = 931.5 MeV/c². )

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Question 4

The isotope ⁶⁴Zn has a nuclear radius of 4.8 × 10−¹⁵ m.Approximately what is the nuclear radius of the isotope ¹²⁵Te?

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Question 5

Approximately how many radioactive atoms are present in a tritium sample with an activity of 0.6 × 10−⁶ Ci and a half-life of 12.3 years? (1 Ci = 3.7 × 10¹⁰ decays/s)

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Question 6

An alpha particle (mass = 6.68 × 10−²⁷ kg)is emitted from a radioactive nucleus with an energy of 6.22 MeV.How fast is the alpha particle moving in m/s? (1 MeV = 1.6 × 10−¹³ J)

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Question 7

10¹⁰ Bq = ______ Ci?

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Question 8

Tritium (³H)has a half-life of 12.3 years and releases 0.0186 MeV energy per decay.What is the rate at which energy is released for a 3.0-gram sample of tritium? (N_A = 6.02 × 10²³ mol^-1,1 year = 3.16 × 10⁷ s,1 MeV = 1.6 × 10^-13 J,and m_t = 3.01605 u)

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Question 9

What is the energy released (or gained signified by the minus sign)value of the reaction ? The mass of the alpha particle is 4.002602 u,of the nitrogen is 14.003074 u,of the oxygen is 15.994915 u,and of the hydrogen is 2.014102 u.(1 u = 931.5 MeV/c²)

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Question 10

The relationship ,where A is the mass number of a nucleus and r is it radius,implies which of the following about nuclei?

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Question 11

If there are 146 neutrons in ²³⁸U,how many neutrons are found in the nucleus of ²³³U?

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Question 12

The isotope ²³⁸U,which starts one of the natural radioactive series,decays first by alpha decay followed by two negative beta decays.At this point,what is the resulting isotope?

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Question 13

Tritium is radioactive with a half-life of 12.33 years decaying into ³He with low-energy electron emission.If we have a sample of 2.35 × 10¹⁹ tritium atoms,what is its activity in decays/second? (1 year = 3.16 × 10⁷ s)

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Question 14

The half-life of ¹⁹N is 0.42 s.What is the decay constant for this isotope?

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Question 15

Which of the following methods of decay does not result in an element different from that of the original parent nucleus?

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Question 16

In the reaction ,what are the mass number and the atomic number of the product designated by X?

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Question 17

A deuteron is captured by an oxygen-16 atom which in turn emits a proton.What is the element and mass number of the product isotope?

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Question 18

Approximately how many half-life periods must elapse if the activity of a radioactive isotope sample is to be reduced to 0.03 of the original value?

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Question 19

Certain stars at the end of their lives are thought to collapse,combining their protons and electrons together to form a neutron star.Such a star could be thought of as a giant atomic nucleus.If a star of mass equal to M = 4.00 × 10³⁰ kg collapsed into neutrons (m_n = 1.67 × 10−²⁷ kg),what would be the radius of such a star? (Hint: r = r₀A^1/3,where r₀ = 1.20 × 10−¹⁵ m. )

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Question 20

Showing 1 - 20 of 37

Exam 30: Nuclear Energy and Elementary Particles: Part A

A radioactive material initially is observed to have an activity of 1000 decays/sec.If nine hours later it is observed to have an activity of 125 decays/s,what is its half-life?

What is the energy released for the reaction where the products are 0.0051 u less than the reactants? (1 u = 931.5 MeV/c2)

Calculate the binding energy per nucleon of the Nucleus,given that the mass of this nucleus is 3.016029 u.(mp = 1.007276 u,mn = 1.008665,and 1 u = 931.5 MeV/c2)

What energy must be added or given off in a reaction where a helium atom is separated into two hydrogen atoms and two neutrons? (Atomic masses for each: hydrogen,1.007825 u;neutron,1.008665 u;helium,4.002602 u;also,1 u = 931.5 MeV/c2. )

The isotope 64Zn has a nuclear radius of 4.8 × 10−15 m.Approximately what is the nuclear radius of the isotope 125Te?

Approximately how many radioactive atoms are present in a tritium sample with an activity of 0.6 × 10−6 Ci and a half-life of 12.3 years? (1 Ci = 3.7 × 1010 decays/s)

An alpha particle (mass = 6.68 × 10−27 kg)is emitted from a radioactive nucleus with an energy of 6.22 MeV.How fast is the alpha particle moving in m/s? (1 MeV = 1.6 × 10−13 J)

1010 Bq = ______ Ci?

Tritium (3H)has a half-life of 12.3 years and releases 0.0186 MeV energy per decay.What is the rate at which energy is released for a 3.0-gram sample of tritium? (NA = 6.02 × 1023 mol-1,1 year = 3.16 × 107 s,1 MeV = 1.6 × 10-13 J,and mt = 3.01605 u)

What is the energy released (or gained signified by the minus sign)value of the reaction ? The mass of the alpha particle is 4.002602 u,of the nitrogen is 14.003074 u,of the oxygen is 15.994915 u,and of the hydrogen is 2.014102 u.(1 u = 931.5 MeV/c2)

The relationship ,where A is the mass number of a nucleus and r is it radius,implies which of the following about nuclei?

If there are 146 neutrons in 238U,how many neutrons are found in the nucleus of 233U?

The isotope 238U,which starts one of the natural radioactive series,decays first by alpha decay followed by two negative beta decays.At this point,what is the resulting isotope?

Tritium is radioactive with a half-life of 12.33 years decaying into 3He with low-energy electron emission.If we have a sample of 2.35 × 1019 tritium atoms,what is its activity in decays/second? (1 year = 3.16 × 107 s)

The half-life of 19N is 0.42 s.What is the decay constant for this isotope?

Which of the following methods of decay does not result in an element different from that of the original parent nucleus?

In the reaction ,what are the mass number and the atomic number of the product designated by X?

A deuteron is captured by an oxygen-16 atom which in turn emits a proton.What is the element and mass number of the product isotope?

Approximately how many half-life periods must elapse if the activity of a radioactive isotope sample is to be reduced to 0.03 of the original value?

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Particle Collisions, Mediating Photons, and Quark Structures: Exploring the Fundamentals of Physics

What is the energy released for the reaction where the products are 0.0051 u less than the reactants? (1 u = 931.5 MeV/c²)

Calculate the binding energy per nucleon of the Nucleus,given that the mass of this nucleus is 3.016029 u.(m_p = 1.007276 u,m_n = 1.008665,and 1 u = 931.5 MeV/c²)

What energy must be added or given off in a reaction where a helium atom is separated into two hydrogen atoms and two neutrons? (Atomic masses for each: hydrogen,1.007825 u;neutron,1.008665 u;helium,4.002602 u;also,1 u = 931.5 MeV/c². )

The isotope ⁶⁴Zn has a nuclear radius of 4.8 × 10−¹⁵ m.Approximately what is the nuclear radius of the isotope ¹²⁵Te?

Approximately how many radioactive atoms are present in a tritium sample with an activity of 0.6 × 10−⁶ Ci and a half-life of 12.3 years? (1 Ci = 3.7 × 10¹⁰ decays/s)

An alpha particle (mass = 6.68 × 10−²⁷ kg)is emitted from a radioactive nucleus with an energy of 6.22 MeV.How fast is the alpha particle moving in m/s? (1 MeV = 1.6 × 10−¹³ J)

10¹⁰ Bq = ______ Ci?

Tritium (³H)has a half-life of 12.3 years and releases 0.0186 MeV energy per decay.What is the rate at which energy is released for a 3.0-gram sample of tritium? (N_A = 6.02 × 10²³ mol^-1,1 year = 3.16 × 10⁷ s,1 MeV = 1.6 × 10^-13 J,and m_t = 3.01605 u)

What is the energy released (or gained signified by the minus sign)value of the reaction ? The mass of the alpha particle is 4.002602 u,of the nitrogen is 14.003074 u,of the oxygen is 15.994915 u,and of the hydrogen is 2.014102 u.(1 u = 931.5 MeV/c²)

If there are 146 neutrons in ²³⁸U,how many neutrons are found in the nucleus of ²³³U?

The isotope ²³⁸U,which starts one of the natural radioactive series,decays first by alpha decay followed by two negative beta decays.At this point,what is the resulting isotope?

Tritium is radioactive with a half-life of 12.33 years decaying into ³He with low-energy electron emission.If we have a sample of 2.35 × 10¹⁹ tritium atoms,what is its activity in decays/second? (1 year = 3.16 × 10⁷ s)

The half-life of ¹⁹N is 0.42 s.What is the decay constant for this isotope?